Well, the Hijri date 20 Rajab 1616 corresponds to the Gregorian date Sunday, 27 December 2189. This date lies in the seventh month of the Hijri year 1616 AH, which is Rajab of 1616 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1616/07/20 is calculated using the Umm Al-Qura calendar and the sighting of the moon. One thing to remember is that this Arabic date may occur on different Gregorian date depending upon the region and country and obviously the moon.
If you are still not sure about the date then you can use our Arabic date converter.
The following is the conversion of the Gregorian date 27 December 2189 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rajab 1616 AH to its equivalent Gregorian date.
إِنَّ ٱلَّذِى فَرَضَ عَلَيْكَ ٱلْقُرْءَانَ لَرَآدُّكَ إِلَىٰ مَعَادٍۢ ۚ قُل رَّبِّىٓ أَعْلَمُ مَن جَآءَ بِٱلْهُدَىٰ وَمَنْ هُوَ فِى ضَلَٰلٍۢ مُّبِينٍۢ
Lo! He Who hath given thee the Qur'an for a law will surely bring thee home again. Say: My Lord is Best Aware of him who bringeth guidance and him who is in error manifest.
Surah Al-Qasas(28:85)